... RadiosAV Receiver with Diversity inputsSmall, light weight,four channel,anodized aluminum case Specifications of D58-4 5.8G ... 10KΩ/500mVp-pTV System: PAL/NTSC/SECAMInput Voltage: 8-12V/500mA Package content:1x D58-4 diversity receiver4x ... work.LED8 is on when no signal.--Select the channel: RX1 for RF1 and RX2 for F2, RX3 ... --Set RX1,RX2,RX3,RX4 to the same channel--LED5 for RF1 and LED6 for RF2,LED7 ...